Method for assigning frequency spectrum bandwidth of an OFDM and OFDMA coexistence system
US8064425B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2004 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Aug 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0087
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for assigning frequency spectrum bandwidth of an OFDM and OFDMA coexistence system, and the base station system combines uplink and downlink data containing OFDM sub-frames and OFDMA sub-frames in a time division fashion, assigns the frequency spectrum reasonably according to the different bandwidth requirements of the OFDM and the OFDMA and the use condition of the frequency band, and constitutes a frame structure realizing the coexistence of the OFDM and the OFDMA, so as to send the OFDMA uplink/downlink data and the OFDM uplink/downlink data. The method for assigning frequency spectrum bandwidth according to the present invention can achieve a higher frequency spectrum utilization efficiency of an OFDM and OFDMA coexistence system, avoid the waste of the frequency spectrum resource of a service provider; and can also realize more flexible networking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.